G, known as "G," is the Elder and primary political leader of the underground society. He enforces strict rules to protect citizens, specifically forbidding exploration of hazardous zones. As Patema's father, he is intensely protective, shielding her from influences like Lagos that encourage boundary crossing. When Patema disappears, he becomes distraught and personally directs the search for her. His leadership prioritizes order and regulation, leading to initial anger when Porta returns with Age, an "invert" outsider, due to rule violations. However, G demonstrates flexibility and compassion. After recognizing Age's vital role in rescuing Patema and understanding his good intentions, the Elder accepts Age. G prioritizes his people's well-being, ultimately welcoming collaboration between the underground society and Aiga's surface world upon learning their shared history and inverted environments' truth. He learns Lagos's fate and collaborates to forge a new future based on mutual understanding.